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  <h3><a href="../contents.html">Table of Contents</a></h3>
  <ul>
<li><a class="reference internal" href="#">Set routines</a><ul>
<li><a class="reference internal" href="#making-proper-sets">Making proper sets</a></li>
<li><a class="reference internal" href="#boolean-operations">Boolean operations</a></li>
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  <div class="section" id="set-routines">
<h1>Set routines<a class="headerlink" href="#set-routines" title="Permalink to this headline">¶</a></h1>
<div class="section" id="making-proper-sets">
<h2>Making proper sets<a class="headerlink" href="#making-proper-sets" title="Permalink to this headline">¶</a></h2>
<table class="longtable docutils align-default">
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<col style="width: 10%" />
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<tr class="row-odd"><td><p><a class="reference internal" href="generated/numpy.unique.html#numpy.unique" title="numpy.unique"><code class="xref py py-obj docutils literal notranslate"><span class="pre">unique</span></code></a>(ar[, return_index, return_inverse, …])</p></td>
<td><p>Find the unique elements of an array.</p></td>
</tr>
</tbody>
</table>
</div>
<div class="section" id="boolean-operations">
<h2>Boolean operations<a class="headerlink" href="#boolean-operations" title="Permalink to this headline">¶</a></h2>
<table class="longtable docutils align-default">
<colgroup>
<col style="width: 10%" />
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<tr class="row-odd"><td><p><a class="reference internal" href="generated/numpy.in1d.html#numpy.in1d" title="numpy.in1d"><code class="xref py py-obj docutils literal notranslate"><span class="pre">in1d</span></code></a>(ar1, ar2[, assume_unique, invert])</p></td>
<td><p>Test whether each element of a 1-D array is also present in a second array.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="generated/numpy.intersect1d.html#numpy.intersect1d" title="numpy.intersect1d"><code class="xref py py-obj docutils literal notranslate"><span class="pre">intersect1d</span></code></a>(ar1, ar2[, assume_unique, …])</p></td>
<td><p>Find the intersection of two arrays.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="generated/numpy.isin.html#numpy.isin" title="numpy.isin"><code class="xref py py-obj docutils literal notranslate"><span class="pre">isin</span></code></a>(element, test_elements[, …])</p></td>
<td><p>Calculates <em class="xref py py-obj">element in test_elements</em>, broadcasting over <em class="xref py py-obj">element</em> only.</p></td>
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<tr class="row-even"><td><p><a class="reference internal" href="generated/numpy.setdiff1d.html#numpy.setdiff1d" title="numpy.setdiff1d"><code class="xref py py-obj docutils literal notranslate"><span class="pre">setdiff1d</span></code></a>(ar1, ar2[, assume_unique])</p></td>
<td><p>Find the set difference of two arrays.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="generated/numpy.setxor1d.html#numpy.setxor1d" title="numpy.setxor1d"><code class="xref py py-obj docutils literal notranslate"><span class="pre">setxor1d</span></code></a>(ar1, ar2[, assume_unique])</p></td>
<td><p>Find the set exclusive-or of two arrays.</p></td>
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<tr class="row-even"><td><p><a class="reference internal" href="generated/numpy.union1d.html#numpy.union1d" title="numpy.union1d"><code class="xref py py-obj docutils literal notranslate"><span class="pre">union1d</span></code></a>(ar1, ar2)</p></td>
<td><p>Find the union of two arrays.</p></td>
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